Pump



Dec. 8, 1942.

C. E. BRIDWELL PUMP W NT w 5 Sheets-Sheet 1 Filed Feb. 1, 1959 5 t mud/In 7/52 INVENTOR CH LONEBmaWA-ZL Deg. 8, 1942. E. BRIDWELL PUMP Filed Feb. 1, 1939 5 Sheets-Sheet INVENTOR. CHAzMEZBRIoWe-u 5 Sheets-Sheet 55 IN VENTOR. chALO/V- E. 5 /0 wsu.

Dec, 8, 1942. c. E. BimDwELL I PUMP Filed Feb. 1} 193a '5 Sheets-Sheet 4 1 NV ENT OR. Cl/AL a/v 5 52/0 WELL ATTORNEY.

Patented Dec. 8, 1942 HE ST o t-nee My invention relates to a new and useful improvement in a pump and adapted primarily for use in deep wells and the like, such as oil wells and water wells.

It is another object of the present invention to provide a pumping mechanism adapted for use in Wells of this type so constructed and arranged that the pulling of the well due to the valve failures will be eliminated.

It is another object of the presentinvention to provide a pump of this class having a valve mechanism so arranged and constructed that a maximum volume may be pumped from the well.

' Another object of the invention is the provision, in a pump of this class, of upper and lower valve mechanisms, spaced apart and cooperating with each other so that leakage of the pump will be prevented and increased volume of flow afforded.

Another object of the inventionis the provision of a construction for having positively and semi-positively operated valves to assure the functioning of these valves at all times at the proper operation of the pump.

Another object of the invention is the provision of a pump construction in which a longitudinally moveable valve may also function as a plunger.

Another object-of the invention is the provision in a pump construction of this type of aslideable .valve positioned between guides for preventing axial tilt and binding.

Another object of the invention is the provision in a pump construction of this type ofaxially slideable valves and stop members for regulating the distance of movement of the valve, and controlling the volume of fluid flow.

Another object of the invention is the provision of a pump having a traveling part carrying positively operated valves and a stationary part having slideable valves nonpositively operated by the traveling part of the pump and also by fluid pressure.

Another object of the invention is the provision of a pump of this type whereby the flowing liquid will serve to wash the interior of the tube in which the moving parts are positioned and par ticularly wash around the ends of the slideable valves so that the deposit of foreign material in such places is prevented.

Another object of the invention is the provision Another object of the invention is the construction of a pump in which certain cages are eliminated and in which all of the moving parts are working on a common center or line of movement.

Another object of the invention isthe. provision of a pump so constructed and arrangedthat the pull tube may be embraced by the traveling tube in spaced relation, and the lower valve traveling with the traveling tube so constructed and arranged that this valve on the tube will act as a plunger when the moveable tube is moving in one direction and theslideable valvefon the pull tube, which fits with precision against the inner surface of the traveling tube, will act as a plunger when the traveling tUlbe-iS traveling in the opposite direction, so that the liquid is forced to travel through the center ofthe standing tube in the usual manner upon movement of the traveling tube upwardly, and the liquidis forced to travel upwardly through the standing tube and outwardly into the-space between the standing tube and-the traveling tube upon the downward travel of the traveling tube, thus affording a maximum flow from the Well.

Another object of the invention is theprovision of a pump so constructed and'arranged that a one-piece'liner may be used which is threaded and piloted ontoa work "barrel or traveling barrel, theattachment being made at either end, but preferably at the lower end.

Another object of the present invention is the provision of a pump so constructed and arranged that the screen at'the lower endoi the pumping mechanism may be eliminated due to the fact that a constant washing of the valve seat and the inner surface of the tube against which parts engage by a snugfit is carried on constantly during the pumping operation.

Another object of the present invention is the provision of a valve mechanism so constructed and arranged in operation that the wear thereon resulting from pounding is eliminated by a snug fitting within the barrel .tube.

Other objects will appear hereinafter.

, The invention constitutes the combination and arrangement of parts, and the general structure illustrated and described and it will be best understood by a reference jointly to the drawings and description herein set out.

Fig. l is a fragmentary, central, longitudinal, sectional view of the invention.

Fig. 2 is a fragmentary, longitudinal, sectional View continuing the section slightly belowv Fig. 1.

Fig. 3 is a longitudinal, sectional view continuing the section slightly below Fig. 2.

Fig. 4 is a longitudinal, sectional view continuing the section slightly below Fig. 3.

Fig. 5 is a fragmentary, longitudinal, sectional 5 view with parts broken away, continuing the section slightly below Fig. 4.

Fig. 6 is a fragmentary, central, longitudinal, sectional view of a modified form of the invention.

Fig. 7 is a longitudinal, central, sectional view continuing the section slightly below Fig. 6.

Fig. 8 is a longitudinal, central, sectional view continuing the section slightly below Fig. 7.

Fig. 9 is a longitudinal, central, sectional, view 15 continuing the section slightly below Fig. 8.

Fig. 10 is a longitudinal, central, sectional view continuing the section slightly below Fig. 9.

Fig. 11 is a sectional view taken on line of Fig. 2.

Fig. 12 is a slightly enlarged sectional view taken on line |2|2 of Fig. 3.

Fig. 13 is a sectional view taken on line |3--|3 of Fig. 4.

Fig. 14 is a sectional view taken on line |4|4 25 of Fig. 5.

Fig. 15 is a. sectional view taken on line |5--|5 of Fig. 7.

Fig. 16 is a sectional view taken on line I6| 6 of Fig. 9. 30

Fig. 17 is a sectional View taken on line ll-l'l of Fig. 9.

Fig. 18 is a sectional view taken on line |8-|8 of Fig. 10.

Fig. 19 is a fragmentary sectional View on line |9|9 of Fig. 12.

Fig. 20 is a schematic view of the invention shown in Fig. l with the mechanism in one position.

Fig. 21 is a schematic view similar to Fig. 20 '40 with the mechanism in another position.

Fig. 22 is a schematic view of the invention shown in Fig. 6 with the mechanism in one position.

Fig. 23 is a schematic view' of the structure in 45 Fig. 2 with the mechanism in another position.

The pump as illustrated in Fig. l isadapted for insertion into a tube which extends to the bottom of the well in which the pump is used. In

taken 35 such wells there is usually provided a standing tube i5. In common installations, a screen is attached to the lower end of the standing tube, but no screen is used with the present invention. This tube I5 is provided with openings.-- l6 through which the fluid liquid may flow into 55 the interior thereof and located above the openings l6 are openings I! which serve as gas vents. This standing tube is connected to a collar l8, commonly called an anchor shoe, the lower end, of which is threaded to the standing tube I5. 60 The well tube I9 is threaded into the opposite end of the anchor shoe l8 and is projected by suitable lengths coupled together by collars, such as the collar 20, to the top of the well. Projecting inwardly from the anchor shoe I8 is a rib 2| 65 having an opening formed therein with an inclined face, machined to provide a seat for the valve head 23 of the anchor. This anchor is provided with an internally threaded portion 24 into. which threads a gas anchor tube 25 extending 79 downwardly into the standing tube I5, and com- .monly terminating below the openings 3. Positioned within the tube I9, and in spaced relation thereto, is a valve cage comprising parts 23;-

and 21 which are threaded together, these parts 75 being tubular. The part 26 is threaded onto the upper end of the anchor 23 so as to engage, with an inwardly projecting circumferential rib or flange 29, the peripheral flange 30 on the tubular valve seat 3|. The part 26 is provided with a plurality of axially directed, circumferentially longitudinally extending guide ribs 32 which serve as guides for the ball 33 positioned within the part 26. This ball is adapted to engage the face 34 of the valve seat 3| and prevent downward flow of liquid. The ball 33 is illustrated in Fig. l as being in the open position, and its movement upwardly is resisted by the abutment 35 which extends diametrically of and forms a part of the part 21. Threaded into the cage section 21 is a pull tube 35 which threads into the lower end of a plunger section 31. Threaded into the upper end of the plunger section 31 is a hollow head 38 having a bore 39 formed therein communicating with which are openings 40. Extending outwardly from the head 38 is a rod 4| having an enlarged portion 42 at its end on which is mounted a seat-forming sleeve 43. The upper end of the rod 4| threads into one end of a threaded portion 44 of a stop guide 45.

Threaded into the upper end of the portion 44 is a, lock screw 46. Embracing the rod 4| -and slideably longitudinally thereof, is a cylindrical valve sleeve 41, carrying at one end the hardened cylindrical insert 48 adapted to contact the seat surface 49 of the sleeve 43 when in the one position longitudinally of the rod 4|. The upper end of the valve sleeve 41 is adapted to engage the lower end 50. of the step guide 45. As shown in the drawings, the construction extending upwardly of the cage portion 21 is a traveling tube 5|, carrying at its lower end the abutment sleeve 52 which is spaced from the periphery of the pull tube 36 a distance less that the spacing of the traveling tube 5|. Formed in the periphery of the valve sleeve 41 is a groove 53 communicating with which are openings 54. Positioned in this groove 53 is a pair of over-lapping split rings. One of these rings 55 has an axially directed portion 56 and the ring 51 overlies this axially directed portion. These split rings are such that they are normally under tension with the inner surface of the traveling tube 5| to afford frictional contact therewith so as to effect the movement of the valve sleeve 41 axially in unison with the traveling tube 5|. The distance of this movement is, however, limited as will appear from the description that follows.

Positioned in elevated, spaced relation to the member 26 is a structure which also contains a valve mechanism. Snugly engaging the traveling tube 5| is a guide tube and plunger section 58 threaded into the upper end of which is a connector 59 which has a portion 60 cut away to provide clearance between its periphery and the inner surface of the traveling tube 5|. Projecting outwardly from the upper end of the connector 59 is a rod 6!, at the lower endof which is formed the seat 62 against which is adapted to engage one end of a sleeve valve 63, the upper end of which is adapted to engage the stop 64 threaded at its upper end 65 onto a threaded portion of the rod 6|. This rod extends through the terminal portion 65 and threads into one end of a guide tube 66, on the upper end of which is formed a valve seat 51. Projecting centrally outwardly from the upper end oi the guide 86 is a connecting rod 68 which extends through an upper adapter and seat-forming member 69 onto which the upper end of the traveling tube 5| is threaded, a portion of this adapter extending into the traveling tube BI and being engageable with the seat 61. This adapter is provided with a constricted portion T of reduced diameter having a head H through which is slideably projected an extension 12 extending outwardly from the head 13 formed on the rod 58. Threaded onto the end of the extension I2 is a connection l4, having a threaded upper end 5 for reciprocation of a sucker rod. The sucker rod is reciprocated in the well known manner and upon its reciprocation it effects through this connection a reciprocation of the traveling tube El and its connecting parts. In downward movement the connection .14 engages the end of the head H and in upward movement the seat 61 would engage the seat-forming end of the member 69. There is thus a certain amount of play which can be regulated by threading the connector M onto or ofi the rod extension 12. This extension 82 is formed with fiat sides to prevent rotation of the traveling tube 5| and its connected parts relatively to the rod 68. This permits the tightening of the sucker rod joints which may become loose in use.

The efiective operative structure in connection with this pump extends from the gas anchor tube 25 to the connection 74. The structure, embodying the anchor tube 25 and its connected parts extending to the screw 45, constitutes the stationary part of this pump. The traveling part of the pump extends from the abutment sleeve 52 to the sucker rod connector M. In use, the parts would be assembled and positioned in the Well tube as illustrated in Fig. l. The head 23 rests on the valve surface 22 in a tight leak-proof fit. The oil, or other liquid pumped, would pass through the openings 5 into the interior of the standing tube 15, and the gas passing into the interior of this tube 15 would be permitted to escape through the openings H, and thence upwardly between the well tube l9 and the casing (not shown) so that the gas entering the standing tube never is allowed to enter the pumping mechanism and substantially all possibility of a gas lock is eliminated. In operation the sucker rod would efiect a longitudinal travel of the traveling barrel or tube 5! and its connected parts.

so as to move them longitudinally of the traveling tube 5!. This longitudinal relative movement will move the seat 6? out of engagement with the member 69 and the seat 62 will be moved out of engagement with the sleeve valve 63. this downward movement, the oil or liquid below the part 58 will be forced to travel upwardly through the bore 5i and thence outwardly through the openings El" into the space Hi. Should the sleeve valve 63 attempt to follow the seat 52 downwardly this liquid surging into the space 56 will prevent any downward sliding of the sleeve 63, so that the liquid will be permitted to escape into the interior of the sleeve 63 from which it may pass through the openings Tl into the space i8 and into the passage 19 of the guide, from which it may pass through the openings 85 into the space 8!. Since the member 59 has been moved out of engagement with the seat 61, the liquid may pass from the space 2i into the interior of the member 59 from which it may issue through the openings 82 into the interior of the tube E9. As this downward movement of this sucker rod connector M continues, the end thereof will strike the head H and force the As the sucker rod moves downwardly, it will carry with it parts 58, 59, 6!, 85, El, and 69 same downwardly, thus causingdownward movement of the tube 5!. When thereverse movement is efiected, the seat 61 will engage the member 59 and pull the traveling tube upwardly with the seat 8! and the member 69 in sealing engagement and functioning as a valve. In the downward movement, the member 64 will be moved downwardly relatively to the tube 5| a distance greater than the space between the member 64 and the sleeve valve 63, so that the sleeve valve 63 will be moved downwardly out of its normal closing position. Consequently, on the upward movement before the traveling tube 58 begins its upward movement, the seat 62 will have engaged the sleeve valve 63 and thus there is a double lock or a double valve against the downward flow of liquid through the pump. The liquid above the valve seat 6! is, of course, sealed against downward flow, and this scaling is again effected by the closing of the sleeve valve 63 against the seat 62. These two valves, therefore, serve to support the column of liquid above, which is being lifted by the traveling portion of the pump.

Onthe downward movement of the traveling tube 5!, the sleeve 41 will travel with the tube because of the frictional engagement of the split rings and 51 therewith, until the valve form-- ing insert 48 engages against the seat 49. By adjusting the position of the connecting member 34 on the rod l, the distance of movement of the sleeve valve 4! may be adjusted and regulated. It may be shortened or lengthened to determine the proper time of closing to adapt it for different types of liquid. This is subsequent to the closing of the ball 33 on its seat and subsequent to the opening of the valve in the traveling section. It will be noted that the valve sleeve t! is carried into closing position by the traveling tube 5!, and that as soon as the valve sleeve 47 has moved into closing position, it remains stationary while the traveling tube continues to travel. 0n the upward stroke, the traveling tube again carries with it, on its initial movement, the valve l! and moves it into open position and then continues to travel. The valve 41 on the upward movement of the traveling tube 5| will be moved into a fully opened position slightly after the movement of the traveling valves into closed position. The time of closing these traveling valves may also be adjusted to accord with I the time of opening the valves in the stationary part. By adjusting the position of the member 65 longitudinally of the rod 6! the length of travel and, consequently, the time of opening and closing the sleeve valve 63 may be adjusted. Similar adjustments may be made on the members it throughthe threaded connections illustrated. It will be noted that in this mechanism the valve 63 moves into closed position on the upward stroke of the traveling tube prior to the engagement of the member 69' with the seat 61, so that the sleeve 63 is carried upwardly relatively to the tube 5! after it has engaged, at its end, the seat 62. Consequently, there is a positive closing of this valve 65 on the seat 62 because after it has been opened it has been moved downwardly of the tube 5| through contact with the member 6 3, a suflicient distance so that this prior closing may result as previously explained. The valve d! is also semi-positively moved from open to type, having a circular contact face contacting with a circular seat, afford a valve which is of with the indicating numerals used in Fig. 1.

I for the ball 38.

maximum length of life in a pump of this type.

It also affords a valve which will function and operate where sand' and foreign material is pumped with the liquid. Even though sand and foreign material may be pumped with the liquid, a sealing connection will be formed with the contact faces. The disadvantages encountered. in an ordinary ball type valve where the liquid is filled with grit are avoided and it becomes possible to operate the device over a longer period of time without requiring a pulling of the valve mechanism. Consequently, if desired, the use of a screen on the lower end of the well tubing may be dispensed with.

When it is desired to pull the pumping mechanism, the pull is exerted on the sucker rod which is connected in the threaded socket I5. This will move the tube upwardly and when the abutment sleeve or collar 52 strikes the lower end of the plunger 31, the stationary part may be raised upwardly, and thus it becomes a very simple and easy operation to pull a pump mechanism of this kind and to install it in operative position.

In the form shown in Fig. 6, I have illustrated a slightly different type of structure in which the moveable valve mechanism is as described in the form shown in Fig. l, and corresponding parts have been designated by numerals corresponding A standing tube I5 is constructed as shown in Fig. 1 and connected to one end of the collar or anchor shoe I8. The well tube I9 is threaded into the upper end of the collar I8 and this collar is provided with the rib 2| having the opening formed therein and machined to provide a seat for the valve head 23 of the anchor. This anchor is provided with the internally threaded portion into which threads the gas anchor tube 25 extended downwardly into the standing tube I5.

Positioned within the tube l9 and in spaced relation thereto, is a valve cage embodying the parts 28 and 21 which are threaded together, these parts being tubular. The part 28 is threaded onto the upper end of the anchor 28 so that the inwardly projecting circumferential flange or rib 28 carried by the part 26 serves to press the peripheral rib or flange 38 against the upper end of the anchor 28. This rib or peripheral flange 88 forms a part of the insert 3| which provides a valve seat for the ball 83 which engages 5,0

the axially directed ribs 32 on the inner surface of the part 28,'these ribs serving as guide ribs This ball 33 is adapted to engage the face 84 of the valve seat 3| and prevent downward flow of liquid. The ball 33 is shown in open position and its movement upwardly is resisted by the abutment 35 which extends diametrically of and is made integral with the part 21. Threaded into the cage part 21 is a pull tube 85.

This pull tube is extended centrally and concentrically of the cage part 2?. Threaded at one end' onto the periphery of the cage part 21 is a tube 86 which serves as a stationary shield or enclosure into the upper end of which is threaded the fitting 8! having a head 88 through the upper upper face of the head 88 is cut away as at 92 for reception of the fiat-faced projection 93 on the lower end of the connector I4. The construction is such that when the connector I4 is moved downwardly, this flat-faced projection 83 will engage in the notch or cut-away portion 92 and a relative rotation of the connector I4 and the fitting 81 which is attached to the stationary tube or casing will be prevented. Welded, or otherwise fixedly secured to the rod 8| is an abutment collar 84 so aranged that when it is desired to pull the well, an upward pulling on the rod SI will bring the collar into engagement with the lower end of the fitting 81. A connecting collar threaded onto the lower end of the rod 9| will serve as a means for connecting the rod 8! to the rod 88. This rod 68 is provided with an enlarged portion 88 which is slideably projected through the head 'I I and provided with a flat-faced portion 91 engaging in the flat-faced reception formed in the lower end of the connecter 95. The head II is formed on the part corresponding to the member 88 shown in Fig. l, and proceeding downwardly of this construction the entire mechanism is the same as described for Fig. 1, down to the screw 48 which corresponds to the screw 48 shown in Fig, 1. This screw 86' is threaded into the head 44' and serves as a lock adjustment screw for the rod M which is threaded into the head 44'. This head 44' is formed integral with the abutment sleeve 46. The rod 8! projects centrally outwardly from the head 98 which forms a part of the connecter I8I threaded into the upper end of a plunger I82 which is connected to and preferably integral with the pull tube 85. A boss I83 is p0- sitioned between the plunger I82 and the pull tube I85 and carries a valve-forming sleeve I84 which is adapted to engage the hardened valve forming sleeve I85 carried by the sleeve valve I86 which embraces the pull tube. The plunger I82, as well as the sleeve valve I86, are slideably mounted so as to snugly engage the inner face of the traveling tube I81 which is connected at its upper end to the member 89. Fixedly mounted on the pull tube 85 is a stop member I88 held in position by a lock nut I89. This stop I88 is adapted to engage the lower end of the sleeve valve when this sleeve valve is moved into open position. The traveling tube I8! threads into the periphery of the thickened portion of the liner or centralizer I I8 which threads at its lower end onto the lower valve retainer III which serves to retain the seat H2 pressed against the liner II 8, and also serves as a retainer for the sleeve valve H3 which embraces and is slideably mountable upon the pull tube 85, this sleeve valve being adapted to engage at its upper end in the seat II2.

In operation, the upper valves will function as previously described, and a description will now be given of the operation of the lower end in this double-acting type of pump. As the sucker rod is forced downwardly, the traveling barrel I81 will be moved downwardly, and as this barrel moves downwardly, the sleeve valve I I4 will move into closed position as shown. At the same time, the sleeve valve I86 will move into open position as shown. The enlarged portion I82 serves as a plunger as the traveling barrel I81 moves downwardly. In this downward movement, the

' liner or centralizer I I8 will move away from the nut I 89 thus elongating the space 286 and setting up a suction upwardly through the pull tube 85, thus moving the ball 33 from its seat and permitting liquid to flow upwardly through the pull tube. The liquid in the interior or the tube 86, upon the downward movement of the traveling tube Hl'l, will be forced outwardly through the openings H5 into the interior of the well tube Hi. The liquid rising in the pull tube in response to the suction set up therein will flow through the openings H6 into the interior of the tube l! and thence into the interior of the sleeve valve it from which it will pass through the openings H1 into the interior of the tube IE1 so as to fill the space H8 which communicates with the enlarging space 206. On the reverse movement of the traveling tube till the valve portions HM and I willmove into engagement to close this valve and the sleeve valve H4 will move into open position. The sleeve valve H3 will also move into open position permitting the fluid trapped in the space 236 and H8 to pass through the openings HQ through the space 129 and into the interior of the valve retainer II I from which it may pass through the openings 2| into the interior of the tube 86 from which it may pass through the openings H5 into the interior of the well tubing l8, As this movement continues and is repeated the liquid in the well tubing it will continue to rise, and thus there is afforded a means for forcing liquid up through the well tubing, in addition to the liquid which issues from the upper end of the pump. This is done without increasing the rod load, and without increasing, to any great extent, the working parts, or the operating expense. Consequently there is an increase in the volume pumped over the single-acting type. It will be noted that the ball 33 serves as a momentary check after liquid is flowing upwardly through the tube 25, at all times, excepting at the time of reverse movement of the sucker rod.

Suction in 85 is caused by enlarging the space 286 as follows: As the barrel Hl'l moves downwardly the space 296 which enlarges must be filled. It cannot be filled from below as the communications below are closed as clearly shown in Fig. 9. Consequently, it must draw through the passage H8 through the opening Ill and the space surrounding the tube 85 up to the openings H6 (Fig. 8) where access to the interior of the tube 85 is permitted and thus suction would e upwardly of the tube. Moreover, as the barrel it? moves downwardly the member :02 acts as a plunger similar to the action of a bicycle pump. This would, of course, set up an outward suction in the barrel 85.

While I have illustrated and described the preferred forms of construction, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as may come within the scope of the appended claims.

What I claim as new is:

1. In a pumping mechanism in which a reciprocating body lifts from liquid from a lower body: a stationary tubular body; a check valve at the lower end of said body and moveable to open position for permitting upward flow in said body; a traveling tube telescoping with and embracing said tubular body, a portion of said tubular body snugly engaging in said traveling tube and forming a plunger therein, said tubular body opening at its upper end into the interior of said traveling tube; and a sleeve valve mechanism mounted on said stationary body in elevated relation to said check valve, and moveable, upon the downward movement of said traveling tube, into closing position for closing communication between said tubular body and said traveling tube, and moveable, upon the upward movement of said traveling tube, into open position for establishing communication between said traveling tube and said tubular body.

2. In a pumping mechanism of the class de-. scribed in which a reciprocating tubular body is adapted for lifting liquid from a stationary tubular body: a stationary tubular body; a valve check at the lower end of said body and moveable to open position for permitting upward flow in said tubular body; a longitudinally moveable tube telescoping withand embracing a portion of said tubular body, a portion of said tubular body engaging as a snug fit in said tube and forming a plunger therein, said tubular body communicating adjacent its open end with the interior of said moveable tube; and a longitudinally moveable sleeve valve carried by said tubular body and moveable by frictional contact with said tube into closed position for closing communication of said tubular body with the interior of said tube upon the downward movement of said tube, and moveable, upon the upward movement of said tube, into'open position for establishing communication of said tube with said tubular body.

3. In a pumping mechanism of the class described in which a reciprocating tubular body is adapted for lifting liquid from a stationary tubular body: a stationary tubular body; a valve check at the lower end of said body and moveable to open position for permitting upward flow in said tubular body; a longitudinally moveable tube telescoping with and embracing a portion of said tubular body, a portion of said tubular body engaging as a snug fit in said tube and forming a plunger therein, said tubular body communicating adjacent its open end with the interior of said moveable tube; a longitudinally moveable sleeve valve carried by said tubular body and moveable by frictional contact with said tube into closed position for closing communication of said tubular body withthe interior of said tube upon the downward movement of said tube, and moveable, upon the upward movement of said tube, into open position for establishing communication of said tube with said tubular body;

.and means for maintaining frictional engagerfimlejnt between said sleeve valve and said moveable 4. In a pumping mechanism of the class described in which a reciprocating tubular body is adapted for lifting liquid from a stationary tubular body: a stationary tubular body; a valve check at the lower end of said body and moveable to open position for permitting upward flow in said tubular body; a longitudinally moveable tube telescoping with and embracing a portion of said tubular body, a portion of said tubular body engaging as a snug fit in said tube and forming a plunger therein, said tubular body communicating adjacent its open end with the interior of said moveable tube; a longitudinally moveable sleeve valve carried by said tubular body and moveable by frictional contact with said tube into closed position for closing communication of said tubular body with the interior of said tube upon the downward movement of said tube, and moveable, upon the upward movement of said tube, into open position for establishing communication of said tube with said tubular body; means for maintaining frictional engagement between said sleeve valve and said moveable tube; and stop means for limiting the movement of said sleeve valve in moving to open position.

Inga pumping mechanism of the class described in which a reciprocating tubular body is adapted for lifting liquid from a stationary tubular body: a stationary tubular body; a valve check at the lower end of said body and moveable to open position for permitting upward flow in said tubular body; a longitudinally moveable tube telescoping with and embracing a portion of said tubular body, a portion of said tubular body engaging as a snug fit in said tube and forming a plunger therein, said tubular body communicating adjacent its open end with the interior of said moveable tube; a longitudinally moveable sleeve valve carried by said tubular bodyand moveable by frictional contact with said; tube into closed position for closing communication of said tubular body with the interior of said tube upon the downward movement of said tube, and moveable, upon the upward movement of said tube, into open position for establishing communication of said tube with said tubular body; means for maintaining frictional engagement between said sleeve valve and said moveable tube; stop means for limiting the movement of said sleeve valve in moving to open position; and adjustment means for adjusting the position of said stop means for regulating the distance of movement of said sleeve valve in moving from closed to open position.

6. In a pump of the class described in which liquid is lifted from a stationary tube by means of a cooperating reciprocating tube embracing carried by said tube; a valve carried by said rod and engageable with said seat and adapted, after engagement with said seat, upon the movement of said rod in the opposite direction, for moving said reciprocating tube in said opposite direction in unison with said rod; and a guide portion carried by and projecting outwardly beyond said valve and engaging theinner surface of said reciprocating tube-for forming a guide for the movement of said valve onto and off its seat.

7. In a pumping mechanism of the class described in which a reciprocating tubular memher is movable in telescopicrelation with a stationary liquid receiving member, a rod projectible into said tubular member at one end thereof, and

moveable longitudinally thereof; means carried,

by said rod, effective upon the movement of said rod in one direction for a predetermined distance, for effecting the movement of said tubular member and said rod in unison in the same direction;

a valve seat carried by said tubular member; a valve head carried by said rod and engageable with said valve seat for sealing flow of liquid into said tubular member, said valve head being moved off its seat upon the movement of said rod in the direction prior to the movement of saidv rod and said tubular member in unison with each other, said valve head effecting, upon the movement of said rod in the opposite direction, after engagement of said head with said seat, a move- ,ment of said tubular member and said valve in the opposite-direction; a second valve head carried by said rod; and a sleeve valve positioned in said tubular member-and engageable at one of its'ends with said second-mentioned valve head, 'said second-mentioned valve head moving Toff its 75 seat in unison with the movement of first-mentioned valve head ofi its-seat.

8. In a pumping mechanism of-the class described in which a stationary liquid receiving tubular member cooperates with a slidable tubular member for receiving liquid from the stationary member, a rod projectible into said slidable tubular member at one end thereof, and moveable longitudinally thereof; means carried by said rod, efiective upon the movement of said rod in one direction for a predetermined distance, for effecting the movement of said slidable tubular member and'said rod in unison in the same direction; a valve seat carried by said slidable tubular member; a valve head carried by said rod and engageable with said valve seat for sealing flow of liquid into said slidable tubular member, said valve head being moved off its seat upon the movement of said rod in the direction prior to the movement of said rod and said slidable tubular member in unison with each other, said valve head effecting, upon the movement of said rod in the opposite direction, after engagement of said head with said seat, a movement of said slidable tubular member and said valve in the opposite direction; a second valve head carried by said rod; a sleeve valve positioned in said slidable tubular member and engageable at one of its ends with said second-mentioned valve head, said second-mentioned valve head moving off its seat in unison with the movement of firstmentioned valve head off its seat; and engagement means engageable with said sleeve valve subsequent to the movementof said second-mentioned valve head away from its seat, and effecting a movement of said valve sleeve toward said second-named valve head, said engagement means being spaced from one end of said valve sleeve upon movement of said valve sleeve into valve-closing position.

9. Ina pumping mechanism of the class described, wherein a stationary liquid receiving tube is telescoped within a slidable liquidreceiving tube, a rod projectible into said slidable tube member at one end thereof, and moveable longitudinally thereof; means carried by said rod, effective, upon the movement of said rod in one direction for a predetermined distance, for effecting the movement of said slidable tube and said rod in unison in the same direction; a valve seat carried by said slidable tube; a valve head carried by said rod and engageable with said valve seat for sealing flow of liquid. into said slidable tube, said valve head being moved off its seat upon the movement of said rod in the direction prior to the movement of said rod and said slidable tubein unison with each other, said valve head effecting, upon the movement of said rod in the opposite. directiomafter engagement of said head withsaid seat, a movement of said slid-able. tube and said valve in the opposite direction; a second valve head carried by said rod; a sleeve valve positioned in. said slidable tube and engageableat one of its ends. with said 1 second-mentioned valve head, said second-mentioned valve head moving off its seat in unison with the movement of first-mentioned valve head 'ofi its seat; and; engagement means engageable with: saidsleeve valve subsequent to the move- -ment of said-second mentioned valve head away from its seat, andeffecting a movement of said -valve sleeve toward said second-named valve head,- said engagementmeans being spaced from one end of said valve sleeve-upon movement of .said valve sleeve into valve-closing position, the space between said engagement means and said valve sleeve being less than the distance of travel of said rod prior to the movement of said rod and said slidable tube in unison with each other.

10. In a pumping mechanism of the class described in which a reciprocating tubular member is adapted to receive and lift liquid from a stationary tubular member, a rod projectible into said reciprocating tubular member at one end thereof, and moveable lon itudinally thereof; means carried by said rod, effective, upon the movement of said rod in one direction for a predetermined distance, for effecting the movement of said reciprocating tubular member and said rod in unison in the same direction; a valve seat carried by said reciprocating tubular member; a valve head carried by said rod and engageable with said valve seat for sealing flow of liquid into said reciprocating tubular member, said valve head being moved 013 its seat upon the movement of said rod in the direction prior to the movement of said rod and said reciprocating tubular member in unison with each other, said valve head efiecting, upon the movement of said rod in the opposite direction, after engagement of said head with said seat, a movement of said reciprocating tubular member and said valve in the opposite direction; a second valve head carried by said rod; a sleeve valve positioned in said reciprocating tubular member and engageable at one of its ends with said second-mentioned valve head, said second-mentioned valve head moving off its seat in unison with the movement of first-mentioned valve head 01f its seat; engagement means engageable with said sleeve valve subsequent to the movement of said secondmentioned valve head away from its seat, and eifecting a movement of said valve sleeve toward said second-named valve head, said engagement means being spaced from one end of said valve sleeve upon movement of said valve sleeve into valve-closing position, the space between said engagement means and said valve sleeve being less than the distance of travel of said rod prior to the movement of said rod and said tube in unison with each other; and means for adjusting the position of said engagement means for varying the distance between said engagement means and the end of said sleeve valve.

11. In a pumping mechanism of the class described in which, a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a rod projectible through said reciprocating tube at one end thereof; means on said rod operative, upon the movement of said rod a predetermined distance in one direction, for effecting a movement of said reciprocating tube in unison with said rod in the same direction; a valve head carried by said rod; a sleeve valve axially slideable in said reciprocating tube and embracing said rod and engageable at one of its ends with said valve head for forming a valve, and for preventing flow of liquid through said reciprocating tube in one direction; and an engagement member carried by said rod and engageable with said sleeve valve upon movement of said valve head in the direction away from the engaged end of said sleeve valve a predetermined distance for efiecting longitudinal movement of said sleeve valve in said reciprocating tube in the same direction as the movement of said valve head.

12. In a pumping mechanism of the class described in which a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a stationary tubular body; means for closing the upper end of said body; a traveling tube telescoping with and embracing said body, a portion of said body snugly engaging in said traveling tube and forming a plunger therein, there being lateral openings in said tubular body communicating with the interior of said traveling tube; a valve seat carried by said closing means; a sleeve valve positioned in said tube,

there being frictional engagement between said I sleeve valve and the inner surface of said tube for eifecting a movement of said sleeve valve and said tube in unison with each other, said sleeve valve, upon the movement of said tube a' predetermined distance in one direction, engaging at one of its ends the said valve seat, and closing communication of the interior of said tube beyond said valve seat with the interior of said tubular body.

13. In a pumping mechanism of the class described in which a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a stationary tubular body; means for closing the upper end of said body; a traveling tube telescoping with and embracing said body, a portion of said body snugly engaging in said travelingtube and forming a plunger therein, there being lateral openings in said tubular body communicating with the interior of said traveling tube; a valve seat carried by said closing means; a sleevevalve positioned in said tube, there being frictional engagement between said sleeve valve and the inner surface of said tube for effecting a movement of said sleeve valve and said tube in unison with each other, said sleeve valve, upon the movement of said tube a predetermined distance in one direction, engaging at one of its ends the said valve seat, and closing communication of the interior of said tube beyond said valve seat with the interior of said tubular body; and means carried by said tubular body for limiting the distance of movement of said sleeve valve in the opposite direction away from said valve seat.

14. In a pumping mechanism of the class described in which a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a stationary tubular body; means for closing the upper end of said body; a traveling tube telescoping with and embracing said body, a portion of said body snugly engaging in said traveling tube and forming a plunger therein, there being lateral openings in said tubular body communicating with the interior of said traveling tube; a valve seat carried by said closing means; a sleeve valve positioned in said tube, there be ing frictional engagement between said sleeve valve and the inner surface of said tube for effecting a movement of said sleeve valve and said tube in unison with each other, said sleeve valve, upon the movement of said tube'a predetermined distance in one direction, engaging at one of its ends the said valve seat, and closing communication of the interior of said tube beyond said valve seat with the interior of said tubular body; means carried by said tubular body for limiting the distance of movement of said sleeve valve in the opposite direction away from said valve seat; and means for adjusting said limiting means for regulating the distance of axial movement of said sleeve valve.

15. In a pumping mechanism of the class described in which a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a vertically directed stationary tubular body; a traveling tube embracing a portion of said body and moveable longitudinally, thereof, a ortion of said tubular body engaging as a snug fit in said traveling tube and forming a plunger therein, said tubular body below said plunger-forming portion being in spaced relation to the inner surface of said traveling tube to provide a liquid-receiving space; a downwardly-faced seat carried by said tubular body below said plunger-forming portion, said tubular body between said plunger-forming portion and said valve seat communicating through lateral openings into the interior of said traveling tube; a valve sleeve slideably mounted on said tubular body, and having its interior in communication with said space, and moveable, through frictional contact, with said traveling tube into engagement at one end with said valve seat for sealing said space from communication with the interior of said stationary body.

16. In a pumping mechanism of the class described in which a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a vertically directed stationary tubular body; a traveling tube embracing a portion of said body and moveable longitudinally thereof, a portion of said tubular body engaging as a snug fit in said traveling tube and forming a plunger therein, said tubular body below said plunger-forming portion being in spaced relation to the inner surface of said traveling tube to provide a liquid-receiving space; a downwardly-faced seat carried by said tubular body below said plunger-forming portion, said tubular body between said plunger-forming portion and said valve seat communicating through lateral openings into the interior of said traveling tube; a valve sleeve slideably mounted on'said tubular body, and having its interior in communication with said space, and moveable, through frictional contact, with said traveling tube into engagement at one end with said valve seat for sealing said space from communication with the interior of said stationary body; and a stop member carried by said stationary body for limiting the movement of said sleeve valve in the opposite direction upon its movement to open position.

1'7. In a pumping mechanism of the class described in which a reciprocating tube receives and lifts liquid from a stationary liquid receiving tube, a vertically directed stationary tubular body; a traveling tube embracing a portion of said body and moveable longitudinally thereof, a portion of said tubular body engaging as a snug fit in said traveling tube and forming a plunger therein, said tubular body below said plungerforming portion being in spaced relation to the inner surface of said traveling tube to provide a liquid-receiving space; a downwardly-faced seat carried by said tubular body below said plunger-forming portion, said tubular body between said plunger-forming portion and said valve seat communicating through lateral openings into the interior of said traveling tube; a valve sleeve slideably mounted on said tubular body, and having its interior in communication with said space, and moveable, through frictional contact, with said traveling tube into engagement at one end with said valve seat for sealing said space from communication with the interior of said stationary body; a tubular casing embracing said traveling tube; a valve seat carried by said traveling tube adjacent its lower end and engageable, upon the downward movement of said traveling tube, with one end of said sleeve valve for closing the lower end of said space, said space below said valve communicating with the interior of said casing upon the movement of said sleeve valve to open position, said sleeve valve moving to open position, upon the movement upwardly of said traveling tube; and abutment means carried by said traveling tube for engaging said sleeve valve and carrying the same with said traveling tube in open position upon the upward movement of said traveling tube.

l8. In a pumping mechanism of the class described, a traveling liquid lift tube, a stationary liquid receiving tubular body; said traveling tube embracing in close relation a portion of said tubular body; a portion of said tubular body engaging the inner surface of said traveling tube in snug relation to provide a plunger; and a limiting, centralizing liner, carried by the lower end of said traveling tube, and snugly embracing said stationary body, said traveling tube being spaced from said stationary body below said plunger-forming portion, and said liner, throughout the major portion of its length, spaced from the inner surface of said traveling tube.

CHALON E. BRIDWELL. 

